If/when our microwave quits, we will replace it with a convection. Until that time, I use my oven to store things in and we have a toaster oven. We set it up outside and we have a dedicated cord that runs to the electric post. That way, no matter what time of year, we are not drawing on the current to the 5'er, but the pole. In some campgrounds, that is even a problem.
It heats up the area around it a lot, so I just don't want to have to deal with that heat, in addition to the heat we are trying to get rid of during the summer. In the early spring and late fall, I might use it inside, but that is very rare.
We purchased ours at a yard sale and I have no idea what brand it is, but it is fairly large, but it is stored under the bench in the dinette.